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Design and Application of Low-NOx Burners in Rotary Kilns

Authors
  • Tao Zheng

    Benxi Iron and Steel (Group) Mining Co., Ltd., Beitai Iron Mine, Benxi 117017, China

    Author

  • Chao Bian

    Benxi Iron and Steel (Group) Mining Co., Ltd., Beitai Iron Mine, Benxi 117017, China

    Author

  • Xiaohong Sun

    Benxi Iron and Steel (Group) Mining Co., Ltd., Beitai Iron Mine, Benxi 117017, China

    Author

  • Lianyong Wang

    Department of Energy Engineering, Northeastern University, Shenyang 110819, China

    Author

Keywords:
Low NOx Burner, Air Pollution, Rotary Kilns
Abstract

In an era of heightened environmental consciousness and stringent pollution controls, the reduction of air pollution, particularly nitrogen oxides (NOx), has emerged as a universal goal. In response to the increasingly rigorous NOx emission standards for industrial furnaces, our innovative research has yielded a groundbreaking solution. By engineering a novel five-channel vortex low NOx burner and implementing it in a company’s lime rotary kiln, we have achieved a remarkable reduction in NOx emissions. The average NOx content in the kiln’s tail gas, previously at 450mg/m3 and in violation of industry standards, has now been successfully decreased by over 30%. This cutting-edge burner technology not only ensures compliance with environmental regulations but also reaches a record-low NOx emission concentration of 135.56 mg/m3 during operation, effectively demonstrating our commitment to and success in controlling NOx emissions. This breakthrough marks a significant contribution to the field of industrial environmental protection and showcases our leadership in developing sustainable industrial practices.

References

[1] Zhang Y, Wang S. Numerical simulation of flue gas recirculation in a lime rotary kiln. Energy, 2024, 297: 131098. DOI: https://doi.org/10.1016/j.energy.2024.131098

[2] Liou J L, Liao K C, Wen H T, et al. A study on nitrogen oxide emission prediction in Taichung thermal power plant using artificial intelligence (AI) model. International Journal of Hydrogen Energy, 2024, 63: 1-9. DOI: https://doi.org/10.1016/j.ijhydene.2024.03.120

[3] Zhou LX, Wang F, Zhang J. Simulation of swirling combustion and NO formation using a USM turbulence-chemistry model. Fuel 2003; 82(13): 1579–86. DOI: https://doi.org/10.1016/S0016-2361(03)00089-9

[4] Zhien CY, Al-attab KA. Design optimization of trio concept combustor geometry for low-grade biomass producer gas combustion. Energy 2022; 238: 121705. DOI: https://doi.org/10.1016/j.energy.2021.121705

[5] Jing L, Zhao J, Wang H, Li W, Du Y, Zhu Q, et al. Numerical analysis of the effect of swirl angle and fuel equivalence ratio on the methanol combustion characteristics in a swirl burner. Process Saf Environ Prot 2022; 158: 320–30. DOI: https://doi.org/10.1016/j.psep.2021.11.019

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Published
2025-03-06
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Copyright (c) 2025 Tao Zheng, Chao Bian, Xiaohong Sun, Lianyong Wang (Author)

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Design and Application of Low-NOx Burners in Rotary Kilns. (2025). Energy & Environment Management, 1(1), 12-17. https://doi.org/10.63333/eem.v1n12

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